J-14 Video: Cody Simpson Sings Justin Bieber's "Mistletoe"

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Kendall and Kylie Jenner took over Ryan Seacrest's Bing Box at The Twilight Saga: Breaking Dawn, Part 1 premiere in L.A. on Monday and they only had one thing on their mind: Christmas. The Keeping Up with the Kardashian stars asked all the celebs to sing their best version of Justin Bieber's "Mistletoe" -- including Cody Simpson! Did Cody know the words? Find out below:

SEE IT: J-14 Video: Cody Simpson's "Evenings in London"

Click "Read More" to see other stars like The Twilight Saga's Jackson Rathbone and Booboo Stewart and Pretty Little Liar's Ashley Benson sing the tune.

What did you think of Cody Simpson's version of "Mistletoe"?

Photo: Courtesy of Kim Messina/J-14

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